Metal cutting machine



March 8, 1932.

w. H. WELQH METAL CUTTING MACHINE Filed July 5, 1928 8 Sheets-Sheet l RO T N E V m March 8, 1932. w H, w c 1,848,288

METAL CUTTING MACHINE Filed July 5, 1928 8 Sheets-Sheet Lg "will March8, 1932. w. H. WELCH METAL CUTTING MACHINE Filed July 5, 1928 8Sheets-Sheet 3 INVENTO mzwwim/zzcib BY I A I v y? I:

I /ZZ5ATTONEY March 8, 1932. w. H. WELCH METAL CUTTING MACHINE FiledJuly 5, 1928 8 Sheets-Shet 4 L's ATTOR March 8, 1932;

W. H. WELCH METAL CUTTING MACHINE Filed July 5, 1928 8 Sheets-Sheet 5March "8, 1932,

W. H. WELCH METAL CUTTING MACHINE Filed July 5, 1928 8 Sheets-Sheet 6 HlNVEN lz'sAT RNE March 8, 1932. w. H. WELCH 1,848,288

METAL CUTTING MACHINE Filed duly'ij, 1928 8 Sheets-Sheet 7 March 8.1932. w, WELCH 1,848,288

METAL CUTTING MACHINE Filed July 5, 1928 8 Sheets-Sheet 8 1&1

WZZZLI'EZZ vide an improved machine of the class de-. scribedenibodying'means for support nge' Patented Mar. 8, 1 932 NITED?STATESPATENT o-Frlcze; f i.

on noonns'rnie NEW YORK, AssIGN'on 'm'o sweethearts-601v:-

rAnzcor: noonnsrnn, NEW Yonx, A coerce-Arron or NEWYORK I oil-TwineMACHINE",

= I jA p ilioation 'filed' my 5, 1928.- Serial -No.'290,537-.

signed to facilitate the handling and eiitting' of bar niziterielo r thelilreinto sections of various lengths: with rapidity and accuracy and ata min mum cost. V

A further object of the invention is toproplurality of bars,sl1a'fts,-or'the' like in "2.5 senibled position at aloedlng. stationfor quick delivery to one or more trucks" or car riers arranged to feedthe bars to the severing means at a cutting station step by step, and

further to provide receiving'trucks or holder's fort-he severedsections, designed to .advzin'ce the ilatter to one or moreunloadingstations, together with operating devices for the several mechanisms andselective control clutch devices designed to control the opere at ingdevices.

A still further ob ect of the invention is to provide improved Workrecelvlng, conveying zind unloading mechanism designed toquielp Ilv'faeilitatethe handling'and unloading of 7 clutch mechanism forcontrolling theopere- 'tion of the elevators on the unloading trucks thework before and after the cutting operation's.

2; further object is to'providean'iinproved selective clutch mechanismfor controlling th'e've'rious operating parts provided for hgindling theWork. Y 7

To thesefand other ends the invention resides in certain improvementsand: combinations of parts; all as Willbe hereinafter more fullydescribed. the novel features being pointed out in the claims at the endof the V specification;

In the drawings 2 Fig. 1' isle diagrammaticplan illustrating oneembodiment of the invention;

Fig. 2 is an end elevation as viewed from the right of Fig. 1;

Fig. 3is afront elevetion'of the machineshown inFig. 11; e v

dis a fregnientarysideielevation'of a power operated truck for receivingand disthe severed sei'ctions'of the work chhrgin'g i hers -Fi 'f5 is afragmentary pert sectional elevation of one of -the"trucks showing themeans for locking it in various positions,

uponthe track; 1

' Fig. 6 is an end elevation of the truck shown in Fig. i with theclamping meansfor the Work applied thereto;

1 7 is a similar view showing the work elevating means raised topositionjto efieet dischar' e of the'work from the truck .l a a i F g.'8 1s a fragmentary part sectional plan of the Work support and theolutoh mechanism for controllingthe moveinents of the truck and thereon;

Fig. 9 isa sectional elevation taken on'li ne -Fig .f10 is .an enlargedpart sectional-elevation' takenon line 10 l0 of Fig.8; J

Fig. 11 is {a sectional plan taken on line 1l .11 ,of Fig. 10 showingthe'euto natic the 'WOIfk elevating means.

gear drivenmeans for returning the eleva-,

tor control clutch to; normal position Fig. 12 is a.detgiiledperspective view of' slide blok shown in,

the screw actuated Fig. '11; v I

Fig; 13 is aseetionel elevation throughthe taken on'line 13 -13""of Fig.8; e I V V Fig. 14 is a transverse) sectional elevation through theclutch housing taken on line llt l'l of Fig. '13 i Fig. 15 is asectional elevation taken on an enlarged scale showing the expandinginea'ns for one of the. clutch bands lndicz'ited 1n F1 -.1-3,'and

Fig; 19* is 'a 1'1fendzelevetion of one otthe worliho1ding"trucks."- I

Similar reference numerals throughouttlie se'verel indie'zatethe same 1parts.

The; present inventionenibodies generally a. poiverdrive'n saw 01cutter,-move'dto'antl from operating posltio'nfto sever'se'ctionstheidesired lengths "from the barniaterml,

held temporarily by suitable supporting means, to which they arepresented by trucks orrcarriers arranged to be advanced step by step ona track located at one side of the work support. At the opposite side ofthe work support is a second track having mounted thereon one or morework receiving and unloading trucks or carriers, normally occupying aposition at which they will receive the projecting ends of the bars tobe severed. The trucks are adapted, after each cutting operation iscompleted, to be advanced preferably by power means associated with thetrucks to a position from which the sections will be discharged by,gravity to an inclined platform. The platform preferably comprises aplurality of hinged sections or closures overlying receivingcompartmentsfor the sections, into anyone of which the sections can be directed byraising the closure therefor. One of the unloading trucks is poweroperated and is under the control of the selective clutch mechanism.Thesame is true of one of the work advancing or delivery trucks, towhich the bars are fed by gravity from an inclined support disposedadjacent the track on which the trucks are arranged to travel. As shown,

only one of the delivery trucks is power op erated, the others beingmoved by the weight of the work thereon, which is suilicicntly heavy toeffect advancement of the same during movement of the power truck. Thebars are clamped on the power truck and when the latter is advanced theends of the bars are projected through the work support to a position atwhich the portions to be severed project within the V-openings of thereceiving and unloading trucks. The severed sections are preferablyclamped within one of the receiving trucks, after which said trucks areadvanced to the unloading station, one by the power means provided andthe other by the weight of the severed sections thereon. The clampingmeans is then removed and the elevating means operated to raise or liftthe sections to a point at which they will be dis charged for movementby gravity on the inelined platform into one of the compartmentsprovided therebeneath.

Referring to the drawings, represents a base having thereon at one enda. V-shaped work holding block or supportll. Secured on the base at oneside of the block is a support 12 for anupstanding bracket 13 having aplurality of rearwardly extending arms 14 overlying the V-shaped worksupport. The

arms are each providedwith a clamping screw 15 and the lower ends of thescrews are provided with enlargedwork engaging members,

not shown, which overlie the V-shaped work support and serve to firmlyclamp the work in position when'the screws are properly adjusted.Between two of the clamping. screws the support 11 is provided with atransverse ter whereby to effect severing of the desired number ofsections from'the bars 23, which preferably constitute relatively longlengths of shafting to be cut up in equal or varying relatively shortlengths as desired. However, the bars whether of metal or other materialmay be of varying shapes in cross section and may be cut in variouslengths. The feed screw 22 is also driven by the motor through suitabledriving means, not shown. The main operating shaft for the drivingmechanism within the housing is indicated at 24 (Fig. 2), its outer endbeing journalled in an upstanding arm 25 suitably secured to the base10. The shaft 24 is preferably driven by a chain and sprocket driveconnected with the motor shaft and enclosed in a housing 26.

At the left side of the cutting mechanism as viewed in Figs. 1 and 2 isan inclined stand or platform 27 upon which the shafting or bars 23 areplaced, ready for discharge by gravityto the trucks or carriers 28 and29 shown at the left of Fig. 3, each of which has an upstanding V-shapedwork receiving block 30. The power operated truck 28 is provided withdetachable side members 27 which are designed to be interchangeablysecured to the tracks 29. A yoke 28 is pivoted to one of the sidemembers and is connected with the other by a removable pin 29. Aclamping screw 30* is threaded through the yoke for clamping the workwithin the V-shaped block 30. The shafts are held upon the inclinedplatform27 by detachable pins 31, which when removed permit the shaftsto roll downwardly into the upstanding V-shaped portions of the trucks-The trucks at this time are positioned at suitable points opposite theinclined platform and at such distances apart as to insure anapproximate equalization of the load thereon. The trucks are preferablyof the four-wheel type, the wheels being indicated at 32 and arranged totravel upon a suitable track, preferably comprising a pair of rails 33supported at the desired height by a plurality of standards 34, whichare preferably connected by cross-tie members, one of which is indicatedat 35 in Fig. 1; The, inner ends of the rails are carried by suitablesupports 36 onthe base 10 as shown in Fig. 1. The work advancing trucks28 and 29 are similar in construction, the only difference being thatthe power operated truck 28 has a downwardly extending portion 37with'which is feeaes:

suitably connected theupperiflight of a sprocket chain 38 disposedcentrally of and;

between the-rails The chain at the outer end of the track travels on asprocket 39 sup ported bysuitabl'e means carried by the cross tie memberof the outerstandard 34. r The chain at its inner end engages a.sprocket 40 on shaft 41 journalled in suitable bearings 42. The shaftadjacent its forward end care ries a sprocket 43 on-whichtravels adriving ch 44 driven by a sprocket 45 onashaft 46' journalled-insuitable bearings 47 on the gear box which houses the clutch mechanismhereinafter described.

Thennloading trucks or carriers for receiving and unloading the severedsections of the bars are indicated generally "at 49 and CID 50, theformer preferably comprising the power operated truck and the latterbeing I moved ..therewith simultaneously by the weight thereon of thesevered sections of the bars. 'The trucks 49 and 50 are also of thefoiir wheel type, the wheels 51 of which are mounted on a suitable trackpreferably comprising a: pair of rails 52,'the inner ends of which arecarried by'suitable iporoshei on thebase 10. A number of Heshaped standards or frames 54serv'e to'support said rails at different points asindicated in Figs. 2 and it The truck 49, asstated above, is preferablypower operated between the unloading station and the point which itoccupies when in position to receive the overhangingends of the barsprojecting through the work support 11 in position to be severed by thecutter. The truck 50 may be manually or otherwise adjusted to thecorrect position upon the erly accommodate lengths to be cut fronrtnebars.

track with respect to the power. truck, whereby it will be the properdlstance from the I latter to receive its share of the weight of theseveral sections severed from the bar material at each operation of thecutter. 'The weight on the truck 50 will be sufficient toadvance it tothe unloading station when the power truck is shifted from receiving tounloading position. By mounting the unloading trucks for independentmovement on the track, one

can'be adjusted relative to another to propsectionsv of The trucks 49and 50fwhen unload-ed, as

hereinafter set forth, discharge the severed sections of the bars at thereceiving station for movement by gravity to one or another of theseveral compartments 55 of a stand or platform indicated generally at 56inFigs; l

and 2, which may be'constructed in any suitable manner. The compartments55 are each.

closed by a door 57 hinged at its rear side'to the frameworkof the standa's-shown inFig.

2.; Each compartment 55may be filled by 7 opening the door thereto. andallowing the severed bar sections to roll therein when d1scharged fromthe unloading trucks. I

different The trucks '49 and 50 are similar .in constructionand adescription ofone will suffice forthe other, the'power truck 49differing;

from the truck 50"only in that it is connected with power operated meansfor moving it back and forth onthe track. It also carries a clampingdevice for the work which may be applied to theatruck50 if desired, orif preferred, bot-h trucks may be provided with Y the same type ofclamping device.

The truck 49 comprises a base 58 having trunnions at its opposite sideson which the" wheels 51 are journalled for travel on the rails 52 asshown in Figs. 6 and 7. Mounted V on the base 58 is a 'V-shaped block orbody59 having opposed inclined portions 60 and 61 for receiving thesevered bar sections 62a as shown in Fig. 6. The blocker body 59-ca'reries atone side thereof a housing 62 for a gear 63 on a shaft 64journa'lled in the walls" of the housing, A guideway' 65 is formed inthe block-for the reception of a rack bar 66, the teeth ofwhichmeshwi'th those of the gear 63, An elevator or'ejecto'r 67 is bolted toone side of he rack bar for movement thereby from the 1 normalposition-shown in r flange or plate portion 7 3 rigid on and proice-tingrearwardly from the block 59 into substantial alinement with the doorsof the platform shown in Fig. 2, so that in raising the elevator to theposition shown in Fig.

'2- the severed sections 62 will roll down the incline78for'deliveryinto one or the other. of the compartments 55 dependingon. which .of the doors 5'? is in raised position. It will be understoodthat while the elevator is being raised the inclined portion 71 thereofwill cause the severed sections 62 whichlie on the inclined face 61, totravel upwardly thereon while at the same time the reinaining sectionswill also be elevated and all willbe brought to the position at whichthey'can be discharged by gravity down the incline 73 to the receivingstand or platform.

The ends of the bars 23am clamped upon the power truck or holder 49 whenboth,

trucks or holders are in position to receive" sald ends, which areprojected through the work support llto the right of thesa'iv or cutterindicated in Fig. 1. The bars will at the' same time be clamped withinthe V'- shaped work support 11 on both sides of the slot-l6 bythecl'amping screws 15; 7 After said" ends' have been severed t-heewei--e erated truck or holder is I moved to the;

for

position shown in Fig. 1 during which time the truck or holder 50 willbe moved by the weight of the load thereon and upon removing theclamping yoke 7 1 of the power operated truck 49 the elevators can beoperated to raise the severed sections which will be discharged from theunloading trucks as stated above.

The work holding trucks 28 and 29 will then be-advanced another step toproject the bars through the V shaped support 11 into the V-blocks ofthe trucks 49 and 50, and the saw is then advanced to again seversections of the desired lengths from the bars. It will beunderstood thatthe bars 23 will be held upon the trucks '28 and 29 by one or more ofthe clamping devices shown in Fig. 19. However, only one is provided andthis is car ried by the power truck 28.

The work clamping device shown in Fig. 6 is of the quickdetachable typeand comprises a yoke-shaped member 7 4, having an operating handle atits front end. and being forked at its rear end to receive a supportingmember 76 to which it is pivoted at 77 for a limited rocking movementabout the axis of the pivot. The lower end of the member7 6 is providedwith an inwardly projecting lug 78 adapted to interlock with acorrespondingly shaped lug 79 on the truck body 59 as shown in Fig. 6. Ashelf-like member 80 projects rearwardly from the block 59" and forms arest for the lower end of the member 76 when positioningit forengagement with the lug 79. The forward end of the pivoted member 74 isprovided with an inwardly projecting lug 81 adapted to engage under alug 82 on the block 59 when the clamping device is in the position shownin Fig. 6'. A screw 83 is threaded through the yoke 74 and carries onits lower end a work engaging member 84 for clamping the work within theV-shaped block. The head 85 of the screw is adapted to receive asuitable wrench for turning the screw which tends to elevate the yoke 74thereby tightly drawing the lugs 78 and 81 into engagement with thelugs7 9 and 82 respectively. The yoke 7 4 is recessed at 83a to permitthe up-, per end of the member 76 to swing into the recess against theaction of a spring 8466 which tends to hold the parts in the positionshown. In detaching the clamping device, the clamping member 84- isfirst loosened by turning the screw 83 a slight amount after which themember 76 is free to drop to the shelf 80 and the lug 81 into loweredposition to a seat 85 on the top of the gear housing 62. By gripping thehandle 7 5 the operator can at the same time pull the yoke for wardlyand swing it upwardly to effect its release from the body of the truck.

The elevators are raised by means of the powershaft 86 extendinglongitudinally between the rails 52 and journalled in a pair of bearings87 depending from the base block 58 of each unloading truck. A sprocket88 is keyed on the shaft between the lugs 87 and carries a sprocketchain 89, which drives the sprocket 90 on the shaft 64, which drives thegear 63 meshing with the teeth of the rack .66 whereby the elevators 67are raised and lowered. The sprocket 88 while being keyed upon the powershaft 86 for rotation in opposite directions thereby is free to slidelongitudinally of the shaft since the key or spline is free to travelwithin the groove 91 of the shaft. The shaft at its outer end isjournalled in a suitable bearing member 92 extending transversely of therails 52 as shown in Fig. 1. The inner end of the shaft is journalled ina suitable bearing 93 on a bracket 94 bolted to a base plate 95extending beneath the rails 52 and also the gear box 48. The plate 95 issupported by a pair of frame members 96 as shown in Figs. 9 and 10. Theshaft 86 carries a worm wheel 97 meshing with a worm 98 on a transverseshaft 99 journalled in a bearing 94a of the bracket 94 and having on itsinner end a gear 100 keyed on the shaft 99, Fig. 10, and driven by meanshereinafter described.

The means for moving the power truck 49 between the work receiving andunloading stations comprises preferably a chain 101 connected by a bolt102 to the bottom of one of the depending bearings 87 for the powershaft 86 as shown in Fig. 4. The chain at the outer end of the track 52is supported by a sprocket 103 journalled on a bracket 104 supported bythe outer standard 5 1, Figs. 1 and 3. At the inner end of the track thechain engages a driving sprocket 105 on a short transverse shaft 106journalled in the bearing portion 9 a of the bracket 94, Figs. 8 and 10,and having at its front end a gear 107 driven by one of the clutchmechanisms hereinafter described.

The clutch drive for raising and lowering the elevators of the trucks 49and 50, through operation of the power shaft 86, the worm shaft 99 andthe gear 100 thereon will now be described. The gear 100 meshes with anidler 108 on a main drive shaft 109 having its opposite ends journalledin suitable bearings on opposite side walls of the gear box 48 as shownin Fig. 13. The idler 108 is driven by a gear 110 fixed on a shaft 111having its opposite ends journalled in suitable hearings on said walls.1 The shaft 111 carries a pair of gears 112 and 113 loosely mountedthereon and adapted to be continuously driven as hereinafter set forth.The clutch for connecting gear 112 with shaft 111 serves to rotate thelatter in one direction to effect raising of the elevators throughrotation of the idler 108 andgear 100 on the worm shaft'99. The gear 113when clutched with the shaftllll will rotate the latter-in an 7 oppositedirection to lower the elevators.-

through reverse operation ofsgears 1210, 108. and 100.

i Each ofthe gears 1512 and1131is provided with a clutch bard 114disposed wit was gear and split ioated' in Fig. 13'to receive engantjaws 115 disposed-be tween the split ends or the band and pivoted at 1]16 to swing Joutwardly when the wedge shaped member 11'? is forcedth'erebetween,

said jaws being held "spaced apart by a pin 118 to pernntithereduced endofathe wedge: to enter the opening between the paws.

It will be understood that the clutch parts.

associated with the gear"'1-13 are the same as those for the gear 112shown in 18;.

and that the left hand end ot the wedge shown in this figure will'operatethe lett handk clutch band in themanner explained above. Thepins 116 and 1'18are suitably secured in the ends 01" driving member 119keyedjon the shaft ll and having its ends. encircling the 1111118 of thegears 112 and 113 as shown in Fig. 13. r A sliding'spooloroperatinginelnher 120 islzeyedupon and mounted for back andforth niovement on the driving member 119 to eii ect nlovernentlofthewedge' '11-? whereby to] clutch either of the gears to the drivingmember depending on I whether 1 or not it is desired to raise orlOWQTAthQ-tflidi elevators; The wedge ll'i'aildthe pivoted jaws" rest ona flattened portion 121 of the driving member and the wedgeis disposedwithin the spool and secured thereto byscrews 122 as shown in Figs. 13and-18;

The gear 112 is continuouslydriven-bya pinion 123 on theldr'ive shaft109, and the" 113 is continuously driven by' a'pinion 124 on a shaft 125havinga-gear 126 continnously driven'by gear 12'Z-on the drive shaft 109,Figs. 13 and '16. It will be seen, thereiore,-that movement of thespool 120 to the right as viewed 1n F 13 willefiectrocanse'it to rotatein a reverse direction to i ectlowering of the elevators;

. The spool is operated by a lever 128 pivoted 2113129 to a bracket 130on thegear box48.

The lower end of the lever engages a slide 131 having ajtongue 132projecting'intothe groove of the spool 120 to effect back and "lever isthat movement of the spool to'the left cnitch the gear 113 to the shaft111 and forth movement thereof when the moved in opposite direct-1011s.

The clutch for controlling niovementof the work advancing truck 28 backand. forth on its track andthe one for controlling the back and forthniove nentof the-unloading truck siiniiair construction tothefclutchabove described. v t1 ese clutch mechanisms willnot therefore berequired; but a description will be given of the gearing for eachands-thecontrollevers tat onof theshait 111 to raise the-elevators. a

A detailed descriptionot therefor. i The relative positions of the threeseparate clutches is-best shown in Fig. 14. e Theunloading truck drivewill first bodescribed, it being-rememberedthatthis truck is moved :backand forth by the chain 101' on sprocket 105 which isf-keyed to shaft 103hav ing aeear 107 thereon. Thegear 107 meshes with the gear 133 011ashaft 13parallelin'g shaft 111. 'This shaft carries gears 135 andcorresponding respectively to gears 112 and113 shown in Fig.13.- Gear135-is driven by the pinion 123 on shaft 109 and gear 1136- by a p nion137' On-a shaft 138 havingifixed thercona gearz139 meshingwithand'driv'en;

itsfront. end a sprocket 1146101. driving a Y chainlt? which ini'turn-drives a sprocket 1 18 on 'shaft435TFigs. 8 was: Shaft 46 carriesa sprocket 415' servingt-o drive chain 44- 611 gaging the sprocket 43on'shaft'l-l which-carries the'sprocket 40 for driving the'chain 38. Theshaft. has loosely mounted thereon two gears corresponding to gears 1121and'113,' oneot which-is'indicatedat 149-in' Fig. .14, this gear beingin mesh "with. and driven by pinion ction 123:0nshait1095 The other gearis indicated at 150in Fig. 15 and is driven'by apinionf151 onashaitf1520n which is fixeda gear 153 driven by gear 127 onthe driveshaft 109; Gears. 149 and 150yare rotated continuously onshaft145andiare alternately coupledthere with "by-a clutchsirnilar; to thatshown in Figs. 13and 18Wl1i0l1 is operated by a lever leetpivote'd at155 and having its lower end pivotallygconnected with-a slide 156carrying an inwardly projecting tongue 157 engaging in the groove of a,clutch operating i spool similar to that shown at 120 in Fig. 1

- The-drive shaft 109 has secured therOnijf sprocket 158 driren by achain'159 whichin turnis driven by a sprocket .160 on the; shaft 161 ofan electric motor'162 showninEigs. 1 and 3. A housing 163 is providedforgen closing said chain and sprockets-as, shown-in S bnt is omittedinFig. 1. w e in order to permit of the shifting unloading truck -19 bymanually/operated means when desired the clutch driven shaft 134- isprovided with a sprocket16 1 on its frontend to bedriven by achain 165which initurn is driven by a sprocket 166 on a shaft 167 journalled in asleeve bearing 168 on the of the I gear box 48, Fig. 10. The shaft 167has on itsenda crank 169 carrying a pin 170 arranged to take into anyone of a series of holes, not shown, formed in the outer face of thehead 171 which is rigid on the shaft. A spring 172 serves to normallyhold the crank in the position shown in Fig. 10 but when it is desiredto rotate shaft 167, the crank will be forced inwardly to move the pin170 into one of the holes in the head 171 and the operator will thenturn the crank to effect rotation of the shaft 134 to rotate gear 133 onits rear end which in turn will rotate gear 107, shaft 106 and sprocket105 for driving chain 101.

For effecting manual operation of the chain38 which is connected withthe work advancing truck 28, shaft 41 is provided with the sameoperating parts shown for effecting rotation of the shaft 167, namely,the crank 169, pin 170, head 171 and spring 172.

A safety stop mechanism is provided for limiting the up and downmovement of the elevator 67 on the trucks 49 and which automaticallyeffects reversal of the shaft 86 when the elevators reach their extremepositions as shown in Figs. 6 and 7. The automatic clutch releasingmechanism is shown in Figs. 11 and 13 and comprises a pinion 173 on thefront end of shaft 111 which meshes with an idler 174 on a bearing 175carried by a bracket 176 suitably connected with the gearbox 48. Theidler 174' meshes with a gear 177 on a feed screw 178 journalled at itsouter end in a bearing carried by the bracket '17 6 and having its innerend threaded into a nut 179 disposed in a pocket 180 of a slide 181guided by the bracket 130 on which the lever 128 is pivoted, as shown inFigs. 10 and 11. The slide is provided with openings 182 at the oppositeends of the nut 179 for the reception of the screw.

The slide has a longitudinally extending slot 183 through which thelever 128 projects. At the opposite ends ofthe slot are adjustable setscrews 184'and 185 which are'adapted to engage the opposite edges of thelever 128 to return the same to normal clutch release position. In theoperation of this de vice, if the lower end of the lever 128 is moved tothe right from the position shown in Fig. 13 to couple gear 112 withshaft 111,

the latter will rotate pinion 173 idler 174 and gear 177 to turn screw178 in a direction to move the slide 181 to the left. 1Vhile theoperator is holding the lever to maintain the clutch in coupled positionwith respect to gear 112, the set screw 185 will be advancing toward thelever and by the time the elevator reaches its uppermost position, thescrew will have engaged and returned the lever to normal position, thuseffecting release of the clutch. The slide 181 will then 'be in reverseposition from that shown in Fig. 13. If the lever is then moved in theopposite direction to effect lowering of the elevator, the clutch willcouple gear 113 with shaft 111 to reverse the operation of the samewhereby to lower the elevator to the position shown in Fig. 6. Reverserotation of the shaft 111 will drive the pinion 173 in a direction toeffect reversal of the screw 178 and the set screw 184 will then beadvanced by the slide 181 to automatically return the lever to normalclutch releasing position. In this way the elevator is prevented frompassing or moving beyond predetermined limits in its up and downmovement.

-Means is provided for clamping the work advancing trucks 29 and theunloadingtruck 50 to their respective tracks when they are adjusted tothe desired positions. This means is indicated in Fig. 5 and comprises aclamp 186 adapted to engage the under side of the head of the rail asshown. A clamping screw 187 extends through the member 186 and isthreaded into a member 188 suitably, secured to the lower portion of thetruck 50 at one side thereof as shown. The head of the screw 187 ispreferably squared to receive a wrench 189 for tightening and looseningthe screw when desired. Similar clamping devices may be readily appliedto the work advancing trucks 29 shown at the left of Fig. 3.

In the operation of the machine, the trucks 28 and 29 are spaced 9.suitable distance apart to receive the bars or shafting 23, the desirednumber ofwhich are allowed to roll into the V-shaped holders on thetrucks upon removal of the pins 31 from the platform 27, Fig. 1. Theyoke 28 is then swung into position and the screw 30 is turned to clampthe bars within the V-holders 30; The trucks 49 and 50 are moved toposition to receive the ends of the bars which project through theV-shaped work support 11 when the trucks 28 and 29 are advanced to theproper position on the rails 33. Operation of truck is effected uponmoving clutch lever 154 to connect the shaft 145 with the driving meansfor the chain 38 whereby the power truck 28 is advanced and likewise thetrucks 29 by the weight of the load thereon as explained above. When thebars have been advanced to project the proper distance through thesupport 11 the clamping screws 15 are turned to' clamp the bars withinthe support and at the same time operation of the screw 83 may beeffected to clamp the projecting portions of the bars within the powertruck 49. The motor 20 is then started and the slide 18 advanced to movethe motor driven saw into engagement with the bars. As soon as thecutting operation is completed and the power truck 49 moved to itsdestination the clamping meanson the power truck 49 is released to freethe severed sections within the V-shaped holder thereon. Lever 140 isthen operated to connect the clutch on shaft 134 with the latterwherebyxto operate the driving meanstor the chain l01which isconnectedwith and serves to move the power truck 49 back and forthbetween receiving and discharging positions. In moving the trucklll-tounloading position truck 50 will be advanced by the weight'of theload thereon as,eXpla-ined'above.- When the trucks have traveled to aposition opposite the platform 56 the clutch is release'd'to discontinueoperation of the chain 101. One of, the closures 57 is thenraised sothat'the severed sec- Zions-62 may roll into the compartmentfio beneathsaid closure In operating the elevators on trucks 4:9 and to unload thesections, lever 128' is moved to couple the clutch on shaft 111 whichserves to operate the driving mechanism for shaft 86,- which will movethe elevators to the unloading position shown in Fig. 7 The clampinmeans on truck 49-has previously "been released and the sections arefree to be discharged onto the platform '56; By the time the elevatorreaches its uppermost position the clutch on shaftlll will beautomatically movedto neutral position by themech anism. shown in Figs.11 and 13 and described above. The

clutch-on shaft-111 is. then moved to reverse posltionand the elevatorsare lowered to the POSltlQII shown in F1 '6; On reaching this positionthe safety means will-again operate automatically to move the-clutch toneutral position as describe'dabove. 1

It {will be understoodthatthe term, bar material and the-like, employedin the claims is'used in a broad sense and is Zintended to applyto anyand all kinds 'ofm'aterial fromwhich sections can be outwith a 'inachineo thepresent type."

, Thezpower truck 28 is the outside 'of the auxiliary support trucks 29at or near the end ot' the track so thatthe bars can be clamped'neartheir extreme ends. The power truck 28 being outside of the auxiliarytrucks will be limited in its movement toward the work support 11.However when it approachesuts limits of travel the work can then beclamped in the power truck 49 and the latter employed to convey the workthrough the machine "for severingby the cutting means.

The clutch mechanism cribed herein serves to control the movements bothof the power. trucks 2S and 49 onthe opposite tracks and the movement ofthe elevators, the raising andlowering operations or are automaticallydiscontinued at the proper tlme, by'a. portion of the clutch mechanismitself as described herein. It will be seen,

therefore, that all of the operations relating to the movement of thework between the different stations by the different power unitsareaiiorded by the single operating motor 162 and that the control isafforded by unitary clutch mechanism which isautousually placed on.

matic with respect to certain 'o f the opera-' tions. J

One particular advantage of a machine of this type is that theoperations can be effected without having to wait for the service of aloading crane which may be engaged in delivering materials at otherpoints at the n time it is desired to perform the operations of severingthe sections from the stock. In other words, the platform can be stockedup from'time to time when the crane is not being used for other purposesand the machine operated When desired to complete the severing' anddelivering operations, the latter taking place at any point desiredalong the track'52, as for example, at thestation 56 where the severedsections are discharged by the elevators for delivery to any of theseveral different compartments beneath the adjustable platform 57. i

I claim as my invention:

In a metal cutting machine, a base, a cutter thereon for severing sectons from bars or the like, a support for holding the bars during thecut-tine operations, mean for a d vancing t is 1 are step by step to thesupport, a track, a truck movable on the track and arranged at one pointto receive the portions to be severed from the bars in advance or" thesevering operations, means for moving the truck to and from said point,a shaft on which the truck is free to slide when moved upon the track anelevator on the truck for lifting the severed sections to eii'ectdischarge of the same from the truck, raising means for the elevatoroperated by s id shaft driving meansfor said shaft including areversible clutch, and means operated by a portion of the driving means,adapted to automatically move the clutch from both operating posi tionsto neutral position when the elevator reaches its extreme upper andlower positions,

a a chain andspr. lret drive between said shafts whereby the ii stmentioned shaft is made. to drive the 7 means for effecting reverse rtation o'i' the drive shaftto raise and lower the elevator;

means for movlngfthe .truclrbaclrand V tort-hon the track. 1

3.- in combination; a b'ase, a cutter mounted thereon. for severingsections from a work piece, atra'ck at one side of the base, truck forrecei'ving theportions of the workto be' second mentioned shaft,

severed in advance of the sever-in operations arranged to travel on thetrack to andfrom receiving position, an cleva'ter cur; ed by the truckfor lifting the secticas to oiiect dis charge ofthe same from the track,a drive shaft paralleling the track and on which the truck is free toslide when moved. back and forth on the track, means arranged to bedriven by the shaft in an position oi he truck to raise and lower theelevator, driv mechanism for the shaft including a reve sible clutch,safety means operate; by t ne driving mechanism adapted to automaticallymove the clutch to neutral position when the elevator reachespredetermined lillliLS in its up and down movement, means for moving thetruck back and forth on the track, and means for feeding the work to thecutter.

4. In a machine for cutting sections from bar material. or the like, awork support, cutting means for severing sections from the bars, a trackat one side of aid cutting means, a work supporting truck comprising arecessed body for receiving the bars in advance of the severingoperations and having wheels for supporting the body arranged to travelon the track, a bearing on the body, a rotary drive shaft journalled inthe bearing, the latter being free to slide on the shaitt when the truckis moved back and forth on the track a rack bar mounted for vertical.movement on the body, a shaftjournailea on too body having a gearmeshing with the teeth of the rack bar, sprockets on said shafts, achain connecting q said sprockets, the sprocket on the first mentionedshaft being free to slide thereon and arranged to be moved by the truckwhen traveling on the track, an elevator for the sections connected witnthe rack bar and arranged to effect discharge of the sections from thetruck upon rotation of the shaft in one direction, driving means for theshaft and means for movin g the truck upon the traclc 5, A machine forsevering sections from bar material and the like, comprising a workholder, cut-ting means for the work, carrying means for the severedsections arranged to advance them toa predetermined point andstationarily supported for holding the material during the severingoperations, an ejector on the carrying means for discharging the severedsections therefrom at said point, power driven means, mechanism formoving the carrying means arranged to be actuated by the power drivenmeans, actuating means for the ejector including a clutch arranged to beconnected with the power driven means for operation thereby and meansresponsive to the power driven means for automatically disconnecting theclutch when the ejector is moved to apredetermined position upon thecarrying means.

6. A machine for severing sections from bar materlal and the like,comprising a work holder, cutting means, reciprocably mounted carryingmeans for conveying the sections from the cutting mean arranged toreceivethe portions of the material to be severed in advanceof thesevering operations, a device for ejecting the sections from thecarrying means movable in opposite directions thereon, mechanism forreciprocating the carrying means, power driven means for operating saidmechanism and operating means for the ejecting device includingreversible driving means arranged to be connected with the power drivenmeans for reverse operation thereby.

7. A machine for severing sections from bar material and the like,comprising a work holder, cutting means, carrying means for conveyingthe sections from the cutting means arranged to support the portion ofthe material to be cut during the cutting operations, a reciprocallymounted ejector for the sections movable between predetermined positionson the carrying means, mechanism for moving the carrying means to andfrom receiving position, power driven means for operating saidmechanism, reversible operating means for the ejector including spaceddriving elements arranged to be individually connected with said powerdriven means, a coupling movable from a neutral position to connecteither of the driving elements with said power driven means and meansoperated by said power driven means arrangedto return the coupling toneutral position subsequent to movement of the ejector from either ofsaid predetermined positions to the other. 8. A machine for severingsections from .bar material and the like, comprising a work holder,means for advancing the material step by step to the holder, cuttingmeans carrying means for conveying the sections from the severing meansstationarily supported in position to receive the sections when severed,an ejector for the work movable between predetermined positions upon thecarrying means, mechanism for moving the carrying means in oppositedirections to and from said receiving position, power driven means,reversible operating means for the ejector including spaced drivingelements arranged to be individually connected with said power drivenmeans, a coupling movable from a neutral position to connect either ofthe driving elements with said power driven means and means operated bysaid power driven means arrangedto return the coupling to neutralposition subsequent to movement of the ejector from either of saidpredetermined positions to the other.

9. 1X machine tor severing sections from bar material and the like,comprisinga base including holding means for the work, severing meansfor the work, means at one side of the holding means for advancing thework thereto for support thereby during the severing operations, acarriage at the opposite side of the holding means arranged to supportthat portion of the work to be severed during operation of the severingmeans, means for moving the carriagein a direction away from the workreceiving position to a predetermined position when the sections havebeen severed, elevating means on the car riage for :moving the severedsections to effect their discharge from the carriage when the latter isat said predetermined position, constantly driven power means,reversible operating means for raising and lowering the elevating meansarranged to be driven by said power means", and means responsive to aportion of said reversible operating means serving to discontinueoperation of said i reversible means by said power means when theelevating means approaches the limits of its up and down movements.

10. A machine for severingsections from bar material and. the like,comprising sup porting means for the work, means for severing thesections from the work, carrying means for the severed sections arrangedto 5 support the portions to be severed during operation of the severingmeans, means for moving the carrying means to andfromposition to receiveand support said portions, an ejector on said carrying means for thesevered sections movable back and forth between predetermined limits,constantly driven power means, operating means arranged for connectionwith said power means to move the ejector back and forth between saidlimits in a predetermined position of the carrying means, and meansarranged to be actuated by a portion of the ejector operating means todiscontinue operation of the same when the ejector approaches saidlimits.

11. A machine for severing sections from bar material and the likecomprising supporting means for the work, means for severing thesections from the work, a carrier for the severed sections arranged toreceive the portions of the work to be severed in advance of thesevering operations, a support for the carrier upon which the latter ismovable to and from said work receiving position, means for moving thecarrier upon said support,

an ejector on the carrier for the severed sections movable back andforth between predetermined limits, a reversible shaft upon which thecarrier is free to move longitudi nally, means arranged to be actuatedby the shaft for moving the ejector between said limits, constantlydriven power means, reversible operating means for said shaft ar-'ranged for connection with said power means for operation thereby inopposite directions,

and means controlled by said reversible operating means arranged todiscontinue operation of the latter when the ejector approaches itslimits of movement.

WILLIAM WELOH,

